JPS5939094B2 - How to detect mice - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for detecting the presence or absence of mice and their types.

Rattusnove, a urinary rat
gi'cus)s'P＜Rattusr
Attus) can cause various harmful effects by eating up food and becoming a source of pathogenic bacteria, so it is necessary to exterminate or capture these rats.

Conventionally, various types of rat-proofing devices that use ultrasonic waves have been commercially available to drive away rats, but these
It was created based on the fact that rats exhibit repellent behavior when they are irradiated with noisy ultrasonic waves with irregular waveforms of about 00 cycles.

However, after a certain amount of use, mice become accustomed to the ultrasonic waves output from these rat-proofing devices, so the effect of expelling mice is insufficient, and the behavior of mice within the range where the ultrasonic waves can reach is strong. Although it is possible to limit the number of mice to some extent, it is difficult to completely control mice, and it has the disadvantage that it is not particularly effective against mice that live in areas such as attic spaces and in the shadows.

In addition, when catching rats, expelling them, feeding them with rat poison, or preventing damage in advance,
It is necessary to detect rats that have invaded the area as early as possible.

However, in the past, there were almost no methods for scientifically detecting mice, relying on empirical methods such as listening to noises, detecting damage, and detecting feces. It is extremely difficult to detect the types of mice that live in the area in advance.

This invention was made to improve the above situation.
The purpose is to provide a method that can scientifically and reliably detect the presence or absence of living mice and their types.

It has been reported that the urinary rats, the drain rat and the black man rat, emit ultrasonic waves that are inaudible to humans, but the individual species are not known, and the nature of their emission is unknown. I couldn't find anything that clearly studied the waveforms.

As a result of detailed analysis and study of the types of ultrasonic waveforms emitted by mice and various experiments, the present invention has been developed to detect the presence or absence of mice by detecting the ultrasonic waves emitted by mice. This invention was invented to be able to detect the type.

In other words, the waveforms of various behaviors and actions, such as the waveforms of ultrasonic waves emitted during courtship behavior between male and female mice, the waveforms of ultrasonic waves emitted during fighting between male androhedrons, and the waveforms of ultrasonic waves emitted during feeding, were measured in various types of mice. As a result of experiments and analysis of each of these waveforms, the inventor discovered that by detecting the waveforms of the ultrasonic waves emitted by mice, it is possible to scientifically detect the presence or absence of mice and their types. .

First, examples of waveforms of various types of ultrasonic waves emitted depending on the type and sex of the mouse are shown in FIGS. 1 to 11.

Figures 1 to 4 show the differences in waveforms depending on the sex of the rat. Figures 1 and 3 are the waveforms of the ultrasonic waves emitted by the male during normal times, and Figures 2 and 4 are the waveforms of the ultrasonic waves emitted by the female. This is the waveform of ultrasonic waves emitted during normal times.

This waveform is obtained by placing male or female rats in separate cages and using a high-frequency microphone to capture the ultrasonic waves they emit under normal conditions using a synchroscope, which clearly shows the differences between the sexes. It is something to do.

In other words, Figures 3 and 4 show the overall characteristics of the ultrasonic waves emitted by both sexes.Both males and females emit pipe-plated ultrasound, but the degree of pipe-plate is smaller in females than in males, and remains approximately constant. Emit ultrasonic waves of sound pressure.

Furthermore, Figures 1 and 2 are enlarged views of parts of Figures 3 and 4, respectively, and allow you to compare the differences between males and females from a different perspective. (14,3
Ultrasonic waves with a higher frequency (25KH) compared to KH2)
It was found that it emits z.

Figures 5 a"-c and 6 show the ultrasonic waves emitted by male and female black rats placed in the same cage, recorded using the same method described above. FIG. 5 shows a partially enlarged view of FIG. 6.

Incidentally, FIG. 5A shows the waveform at the initial stage when the male and female begin to resonate, and the waveform finally becomes approximately the same as that shown in FIG. 5C.

This is because when a male and a female are placed in a cage together, the female gradually approaches the frequency of the ultrasonic waves emitted by the male (see Figure 5, 6).
) After that, the imaging width is also combined, and the male and female resonate, and it is proven that the male and female ultimately emit ultrasonic waves that are approximately the same as the male's ultrasonic waves.

Here, the solid line shows the waveform of the ultrasonic wave emitted by the male, and the dotted line shows the waveform of the ultrasonic wave emitted by the female.

From this, it has become clearer that although males and females each emit their own unique ultrasonic waves, females perform gestation dances that emit ultrasonic waves with frequencies and amplitudes similar to those of males.

Furthermore, the waveforms of the ultrasonic waves emitted by the jumping mouse are shown in FIGS. 1 to 11.

These figures show a male jumping mouse placed in a cage, and using a high-frequency microphone, the ultrasonic waves emitted by the flying mouse during normal times were captured using a synchroscope.

In addition, FIGS. 10 and 11 show the overall characteristics of the ultrasonic waves emitted by the jumping mouse, and FIGS. 7 and 8 show partially enlarged versions of FIGS. 10 and 11, respectively.
In addition, Figures 1 and 10 show the waveforms at the beginning of the rat's sound, and Figure 9 shows the waveforms at the end of the sound, and the middle part is shown as waveform 8.
This is shown in FIG.

This shows that the gutter rat emits ultrasonic waves with a gentler pie rate than the black rat mentioned above, and that the frequency of the ultrasonic waves gradually decreases from the beginning of the sound to the end of the sound. It was also found that it has the following characteristics.

In addition, the ultrasonic waves emitted by young black rats have a frequency shift of about 30 to 25 KHz, and they sing continuously for a relatively long time (about 0.3 to 0.5 seconds). On the other hand, the frequency jumps all over the place in a short generation time of several tens of milliseconds, giving the sensation of a beep.

In this way, the "age" of the object can be determined by the waveform of the ultrasonic waves emitted by the object.

As a result of analyzing the waveforms of the ultrasonic waves, it is possible to detect not only the presence or absence of a mouse, but also the type of mouse.

Next, a specific example of the detection device will be explained starting from the 12th pressure.

First, place a microphone in a place where mice are likely to appear.

This microphone uses a high frequency microphone that can sense ultrasonic waves within the range of 10KH2 to 50KH2.

Next, the ultrasonic waves captured by the microphone are amplified using an amplifier, and then the waveforms of the ultrasonic waves are sequentially observed using a synchroscope.

Alternatively, the ultrasonic waves captured by the above-mentioned microphone can be recorded at high speed using a recorder, and then the waveform or high-speed recording (1/1
Observe the playback sound (at a speed of 0 to 1/20).

As described above, this invention makes it possible to detect the ultrasonic waves emitted by mice and determine whether they are present or not, as well as their type by analyzing their waveforms.
Since it can be detected scientifically, detection is very reliable.In particular, by installing the device in a certain place in a building, it can detect rats that have inhabited and invaded the building at an early stage, allowing the rats to breed and cause damage. It has the advantage of being able to carry out reasonable control measures in advance.

[Brief explanation of the drawing]

Figures 1 to 11 show the various behaviors of each mouse. 12 is a diagram of each waveform of ultrasonic waves emitted during operation, and FIG. 12 is a block diagram of an example of a device implementing the present invention.

Claims (1)

[Claims] 1. A method for detecting a mouse, characterized in that the waveform of ultrasonic waves emitted by a mouse is recorded, and the presence or absence of a mouse and its type are detected based on the waveform.